I ordered some blue LEDs, and to my surprise when I open the box they were all 5mm instead of 3mm. I wanted a modded Wiimote for myself, so I improvised and got amazing results with the 5mm with new placements not seen in the other tutorials.
I started with the Nunchuck, seeing the LED was to big to fit under the analog stick... But I also realized that since these things are bigger, they are brighter! I solder the LED in and messed around until I found a good resting place for the LED.
I took electric tap and covered the solder points and used it to hold the LED in place. Here is a pic with the LED on uncovered.
After I put the top on I noticed the LED was bleeding through really, really bad. So I thought, why not have some fun with it. I covered the top with black tape and colored in the corners with black sharpie. I then got this design and was very pleased.
I then moved on to the Wiimote. The LED was to big to fit in the B button, and was to big to fit next to the A... Then I saw a corner of hope! I solder in the LED making sure to leave a decent length of wire to work with.
I then taped up my chosen corner (You could use the opposite side as well) and bent the wires so the LED would fall in the corner when I laid the board back down.
It was a little hard to lay the board back down because of the tape, but everything fit tight and the way it was supposed to. When I closed the Wiimote up, I saw some places I missed with the tape... But I'm not picky so I just left them, and when I put my rubber casing over the Wiimote you can barely tell.
Wiimote and Nunchuk together.
Besides the uncovered spots on the Wiimote this turn out very well for having oversized LEDs.
Please comment, this is my first Wiimote mod and I had to improvise it.
Alternative LED Placement (Large LED - Looks Great)
